My second Vespa and only because the first was a little snug. When the temperature is 12 degrees or less, this is an essential top layer to block that air from blowing through the other layers. It also is a great blocker of light drizzle. Add to this the HiViz colours and it gets worn if visibility is critical. If it actually isn't required, it costs virtually nothing to stow away. There are a few changes between the older (4 yrs) and new Vespa: the shoulder panel is now one piece and the reflective piping that was across the bottom of this has moved to the neck and is narrower. The material seems to be a little noisier though this may just be because the newer garment hasn't been washed yet.
Agent Orange / XXL